<html>
  <head>
    <link
      crossorigin="anonymous"
      href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css"
      integrity="sha256-W2Gq3IRvCBiYHO7DG0nEdfsITBY/3sXvvCwh71OQkqk="
      rel="stylesheet"
    />
  </head>
  <body></body>
</html>
